Subalgebras of bigraded Koszul algebras

Details Subalgebras of bigraded Koszul algebras Subalgebras of bigraded Koszul algebras

2000-11-29

arxiv.org/abs/math/0011251v2

Mathematics

Commutative Algebra

13 pages

Scientific paper

We show that diagonal subalgebras and generalized Veronese subrings of a
bigraded Koszul algebra are Koszul. We give upper bounds for the regularity of
sidediagonal and relative Veronese modules and apply the results to symmetric
algebras and Rees rings.

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